Angelsky, Oleg V.Bekshaiev, Oleksandr Yа.Hanson, Steen G.Mokhun, Igor I.Vasnetsov, Mikhail V.Wang, WeiБекшаєв, Олександр ЯновичБекшаев, Александр Янович2022-08-092022-08-092021Frontiers in Physicshttps://dspace.onu.edu.ua/handle/123456789/33562Singularities in wave fields form a relatively young concept of wave physics originating from the seminal article by Nye and Berry. Initially, this concept seemed rather abstract and curious, but the development of laser optics has demonstrated the ubiquity of optical singularities and their exceptional power in characterization, control, and applications of light fields. The era of singular optics started, and now, it is difficult to indicate another area of optics that is developing so rapidly and steadily.enstructured lightsingular opticscorrelation opticsoptical vortexangular momentumArticle10.3389/fphy.2021.651964